okay i just removed my 2 ohm factory back speakers ( 6 by 9) and i put my 80 watt 4 ohm 6 by 9's in they hook up diferently. the connector doens't hook up what type of adaptor do i need? i prob will get an amp but i would like to see how they hook up on their own to see if they are okay. do i need this if i am getting an amp? amp : 200 watt rockford p200.2 anyone? thanks